It turns out that "crater rim" crop was made from the sol 4 110mm shots, such as this one. They hadn't yet appeared on the public site when I wrote that post. So it wasn't a crop of the 360 deg pan.

Anyone know if "nylon" zip ties have been used on previous rovers or if they are new to Perseverance?

Hopefully posting this in the right thread.

I had a go at making slo-mo version of the parachute deployment, using Dain AI frame interpolation.

https://www.youtube.com/watch?v=ovsG168Hqvk

Spot on from xkcd

Here are some zip ties on Opportunity :

That's Curiosity. There really are getting to be too many rovers!

While we wait for NASA/JPL to finish their health checks on instruments, I found the following:

1. A company called ABB makes Ty-Rap cable ties that have been used on the Perseverance, Curiosity, Spirit and Opportunity rovers.

https://new.abb.com/news/detail/74634/ty-rap-mars


2. The Perseverance twitter feed just posted the sound of laser shots on Mars, and a cleaned up version of the first audio recording from Mars.

It's very cool to hear the winds of Mars. For some reason, I thought the wind would have a higher pitch, maybe because of Hollywood?

https://twitter.com/NASAPersevere?ref_src=t...7Ctwgr%5Eauthor

Feel free to peruse https://nepp.nasa.gov/files/27631/NSTD87394A.pdf and learn how to tie lacing tape knots, use zip ties (the doc calls them "plastic straps"), etc. If there's specific guidance about when to use one instead of the other I'm not sure what it is, but I've never been great at tying knots in lacing tape (I've worked with techs who could do it one-handed, really quite impressive.)

Really cool. Can we expect stereo with the next lander?

Could use a touch of Dolby as well.

Phil

An unprotected mic (eg a camera mic) in the wind can produce spurious low-pitched rumbles, I guess due to turbulence or oscillations around the mic. I don't know if that might be what we're hearing here.

I was thinking the same thing, especially since the laser shots sounded like what you would expect.

But I found a NASA website that simulates various sounds on Mars with the same sounds on Earth:

Sounds of Mars

Some sounds are more altered than others...

From the website: "The atmosphere of Mars, made up of 96 percent carbon dioxide, would absorb a lot of higher-pitched sounds, so only lower-pitched sounds would travel long distances. This effect is known as attenuation -- a weakening of the signal at certain frequencies -- and it would be more noticeable the farther you were from the source."

This would explain why the laser shots, which are close to the microphone, sound "normal".

Anyway, the sounds will certainly help the engineers and scientists and they sure are interesting to listen to.

Reminder to all that in order to maintain some sort of searchability for future reference we try to organize current events for rovers temporally and spatially (as in traverse legs). Right now, please post all current events in the Perseverance Early Drives thread; thanks!

Thanks Mike. Brings back fond memories of grandma's mil-spec docs, when she was teaching me to solder as a kid. Not much need to pass on lacing skills since I was just putting together Heathkit projects, not building wiring harnesses for P-3s.

Thanks Marvin. I'd guessed they wouldn't just be nylon. Also, nice to see they aren't crazy expensive, $1-$3 depending on length.

I updated my Sol3 MastcamZ panoramic with Sol11 pictures. The horizon was kinda blurry because of little bit out of focus pictures. Now it's in the past.

Amazing work as always Damia!

Perfection.

Bravo Damia : you deserve 6 wheels for this nice work of yours

With, I hope, Damia's blessing, I took the medium resolution version of your panorama, cropped specifically around the delta, and magnified the vertical axis 8x.

This, to me, highlights the objective of the mission as well as any image now can. When we see the delta soar high and imposing we see the grandeur of Perseverance's aspirations. And all those smooth surfaces facing us conceal what we want to know about, and what, we hope, Mars Sample Return will fully reveal.

All that wide panorama of Jezero is beautiful, but the objective is right here, in this one formation, and the many parts of it that we cannot see yet.

Amazing Damia, you mastered this panorama! I can't imagine the number of hours you spent on that one.

Thank you Thomas & Olivier for your very kind words

Indeed Thomas, it took me many time to get this panoramic right !

Hello to all,
we went back to the panorama of sol 4 and we worked mainly on the sound of the wind (repeated a few times in this movie). Earphones are not required.
it's a bit like being on Mars for 5 minutes

https://youtu.be/IGJYO8wZ_Q8

Exactly, local dynamic pressure fluctuations cause the microphone diaphragm to move just as elastically-propagated pressure variations (aka sound) do. Although one person's noise is another person's signal, I wouldnt call it 'spurious'. We may try to use microphone data to measure winds and turbulence

http://www-mars.lmd.jussieu.fr/granada2017...granada2017.pdf

Perseverance's Landing Vision System is still delivering surprises!

Fellow enthusiast Simeon Schmauss has done some remarkable work stabilizing LCAM images, and in so doing, spotted a large dust devil traversing across the delta during Perseverance's descent, northwest of where the rover would land only seconds later. Simeon's discovery is the first dust devil imaged by Perseverance. Also worth noting, we've seen dust devils from the surface and from orbit, but never from an entry system, before this.

Simeon clocked the DD moving at an astonishing 8.5 m/s. The DD was roughly 20m wide at its base and traversed between 600 and 1000m, depending on where you perceive the first discernable visual signal.

It's a remarkable discovery and a testament to the value of getting raw images to public expediently.

https://twitter.com/stim3on/status/1379575241970683908?s=20

That is amazing. What a discovery! Thanks for linking to it.
Phil

What a first post Ryan! Welcome to the forum and you’re member 9001

I just watched the Anderson Cooper segment about Percy and Ingenuity on 60 Minutes https://www.youtube.com/watch?v=gRrFRL5v0ig He mentioned the early panorama of rover images put together by Sean Dornan. The project scientist Ken Farley was impressed.

There were 4 images of the Sky Crane/Descent Stage crash... I finally took some time to do a little something with them.
I wrote a very simple interframe interpolation program (thank goodness the camera didn't move)
A little cleanup and little equalize...

* the dust cloud around Percy (from the Sky Crane) is settling into the distant
* the crash plume moves slowly southerly on a breeze
* there is a local horizon before the Deltas
* the Hazcam dust cap goes away and we then see clearly on Sol 2 (almost the same local time)
* the actual plume images cover 18 secs (I really sped it up!)

Here is the GIF

Click to view attachment